The story is set in Rome, and starring an arid mathematics professor who rediscovers the fundamental role of feelings. Luca is a grim and rigid professor of mathematics closer to the rules that the domain of feelings. When Tito, his student, is killed by Luke error is filled with remorse for having behaved harshly towards him. A Tito night the front appears with two angel wings and Luke almost takes a hit but, over the shock, he began to communicate with him. Along with Tito, Luke will solve a case seemingly hopeless (Titus to help save the life of Esther, fallen into a bad turn after the boy's death). So soon Luca recovers a touch of humanity and suffering buried in his heart.